20146213465 has 8 divisors (see below), whose sum is σ = 27629092800. Its totient is φ = 13814546352.

The previous prime is 20146213463. The next prime is 20146213481. The reversal of 20146213465 is 56431264102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20146213465 - 2¹ = 20146213463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20146213465.

It is not an unprimeable number, because it can be changed into a prime (20146213463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287803015 + ... + 287803084.

It is an arithmetic number, because the mean of its divisors is an integer number (3453636600).

Almost surely, 2^20146213465 is an apocalyptic number.

It is an amenable number.

20146213465 is a deficient number, since it is larger than the sum of its proper divisors (7482879335).

20146213465 is an equidigital number, since it uses as much as digits as its factorization.

20146213465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575606111.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 20146213465 its reverse (56431264102), we get a palindrome (76577477567).

The spelling of 20146213465 in words is "twenty billion, one hundred forty-six million, two hundred thirteen thousand, four hundred sixty-five".